Aluminum concentrations in central and peripheral areas of malignant breast lesions do not differ from those in normal breast tissues

Table 1 Optimized heating program for GF AAS measurements

Step	Temperature	Ramp Time	Hold time	Flow rate
	(°C)	(s)	(s)	(mL min ^{− 1} )
Drying	110	1	30	250
Drying	130	15	30	250
Pyrolysis	1500	10	20	250
Atomization	2350	0	5	0
Cleaning	2450	1	3	250
Cooling	20	1	5	250

Note: Correlation coefficients for Aluminum concentration and the water content of the samples were: 0.23 for normal tissues; 0.26 for peripheral tumor areas, and 0.16 for peripheral tumor areas, showing that samples with increased water content (and therefore lower fat content) had slightly higher concentrations of aluminum.

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